31423312042133 has 4 divisors (see below), whose sum is σ = 34279976773248. Its totient is φ = 28566647311020.

The previous prime is 31423312042121. The next prime is 31423312042139. The reversal of 31423312042133 is 33124021332413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31423312042133 - 2¹⁶ = 31423311976597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31423312042133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423312042139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1428332365541 + ... + 1428332365562.

It is an arithmetic number, because the mean of its divisors is an integer number (8569994193312).

Almost surely, 2^{31423312042133} is an apocalyptic number.

It is an amenable number.

31423312042133 is a deficient number, since it is larger than the sum of its proper divisors (2856664731115).

31423312042133 is a wasteful number, since it uses less digits than its factorization.

31423312042133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856664731114.

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 31423312042133 its reverse (33124021332413), we get a palindrome (64547333374546).

The spelling of 31423312042133 in words is "thirty-one trillion, four hundred twenty-three billion, three hundred twelve million, forty-two thousand, one hundred thirty-three".